TiO₂/PCL Hybrid Layers Prepared via Sol-Gel Dip Coating for the Surface Modification of Titanium Implants: Characterization and Bioactivity Evaluation

Abstract:

When bioactive coatings are applied to medical implants by means of sol-gel dip coating technique, the biological proprieties of the implant surface can be modified to match the properties of the surrounding tissues. In this study, sol-gel method is used to synthesized organic-inorganic nanocomposites materials consisting of an inorganic titania matrix in which 10 wt% of a biodegradable polymer, the poly-ε-caprolactone (PCL), was incorporated. The synthesized materials, in sol phase, were used to dip-coat a commercially pure titanium grade 4 substrate in order to improve its surface biological properties. Materials were characterized using Fourier transform infrared spectroscopy (FT-IR) and a morphological analysis of the obtained films was performed via scanning electron microscopy (SEM). Coating bioactivity was investigated by soaking coated substrates in a fluid simulating the human blood plasma (SBF) and successively evaluating the formation of a hydroxyapatite layer on their surface by means of SEM/EDX (energy dispersive X-ray).

• Periodical: Applied Mechanics and Materials (Volume 760)
• Pages: 353-358
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.760.353
• Online since: May 2015
• Authors: Michelina Catauro, Flavia Bollino, Ferdinando Papale, Giuseppe Lamanna*
• Keywords: Bioactivity, Dip Coating Technique, Organic-Inorganic Hybrid Materials, Sol-Gel Process

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